Texas Instruments INA214AIDCKTG4

Overview

INA214AIDCKTG4 from Texas Instruments is a voltage-output, bidirectional current-shunt monitor with zero-drift architecture, designed for high-accuracy low- or high-side current sensing in power management systems. It features 100 V/V fixed gain, ±60 µV maximum input offset voltage (RTI), 0.5 µV/°C max offset drift, –0.3 V to 26 V common-mode input range, and operates from 2.7 V to 26 V supply with ≤100 µA quiescent current.

For engineers reviewing the INA214AIDCKTG4 datasheet, INA214AIDCKTG4 pinout, INA214AIDCKTG4 application, or INA214AIDCKTG4 equivalent, this page delivers verified specifications, SC70-6 package pin mapping, real-world use cases in battery chargers and telecom equipment, and two validated alternative parts with documented technical and application differences.

Technical Context

The INA214AIDCKTG4 implements a precision zero-drift chopper-stabilized amplifier topology enabling accurate measurement of shunt voltage drops as low as 10 mV full-scale. Its differential input stage rejects common-mode voltages up to 26 V independent of supply voltage, supporting both low-side and high-side configurations without level-shifting circuitry.

It integrates matched internal resistors (R_INT = 10 kΩ) for 100 V/V gain, delivers 30 kHz bandwidth with 0.4 V/µs slew rate, and maintains 105 dB minimum CMRR over –40°C to +125°C. The REF pin supports adjustable output offset, and the device draws only 65–100 µA supply current across temperature.

Key Specifications

Pinout & Package

INA214AIDCKTG4 is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable electronics and modular power supplies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with INA214AIDCKR, the G4 variant offers identical performance in tube packaging for bench evaluation; versus INA226AIDGST, INA214AIDCKTG4 provides lower power, simpler analog interface, and smaller footprint-but lacks digital diagnostics and energy calculation.

Availability

INA214AIDCKTG4 is available at Aetrix Electronics and suitable for battery chargers, telecom power modules, notebook power rails, and industrial motor drives requiring stable component supply, long-term manufacturability, and guaranteed traceable sourcing.

Supply support for INA214AIDCKTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power management ICs.

The INA21x product line was engineered specifically for high-accuracy, low-power current sensing in space- and energy-constrained applications-including portable computing, telecom infrastructure, and industrial power conversion.

FAQ

What is the maximum common-mode voltage the INA214AIDCKTG4 can measure?

The INA214AIDCKTG4 supports a common-mode input voltage range of –0.3 V to 26 V, independent of its supply voltage. This allows it to accurately sense current on high-side 24-V rails while operating from a 3.3-V supply. The specification is guaranteed across the full –40°C to +125°C temperature range and applies to both IN+ and IN– pins referenced to GND.

Does the INA214AIDCKTG4 require external gain-setting resistors?

No, the INA214AIDCKTG4 has a factory-trimmed fixed gain of 100 V/V and does not require external resistors. Its internal resistor network (R_INT = 10 kΩ) is laser-trimmed for accuracy, eliminating layout sensitivity and component count. External resistors are only needed if input filtering is added-and must be ≤10 Ω to avoid introducing measurable gain error.

Can the INA214AIDCKTG4 be used for bidirectional current sensing?

Yes, the INA214AIDCKTG4 supports true bidirectional current sensing by leveraging its REF pin. When REF is tied to mid-supply (e.g., V+/2), the output swings symmetrically above and below that reference-enabling distinction between charge and discharge currents in battery applications without additional circuitry.

What is the purpose of the REF pin on the INA214AIDCKTG4?

The REF pin on the INA214AIDCKTG4 sets the output voltage offset. When grounded, it produces a unipolar 0-V to V+ output proportional to sensed current magnitude. When biased to V+/2, it yields a bipolar output centered at V+/2-essential for bidirectional sensing. It also serves as the reference for internal amplifier stages, so low-impedance drive is critical for optimal CMRR.

Is the INA214AIDCKTG4 RoHS-compliant and lead-free?

Yes, the INA214AIDCKTG4 is RoHS-compliant and lead-free per TI's official product change notification (PCN) and material declarations. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 rating and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards.